文献类型：期刊文献

英文题名：Enhanced electromagnetic loss of polybenzoxazole copolymerized with etched multiwalled carbon nanotube via direct Friedel-Crafts acylation

作者：Chen, Yong[1];Qian, Jun[1];Teng, Xin[1];Zhang, Kan[1];Zhuang, Qixin[1];Han, Zhewen[1]

机构：[1]E China Univ Sci & Technol, Key Lab Ultrafine Mat Educ, Sch Mat Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2014

卷号：1

期号：2

外文期刊名：MATERIALS RESEARCH EXPRESS

收录：;EI(收录号：20191306678053);WOS:【SCI-EXPANDED(收录号:WOS:000209665000027)】；

基金：This research was supported by National Nature Science Foundation of China ( 50973028), Innovation Program of Shanghai Municipal Education Commission (12ZZ049), and the Fundamental Research Funds for the Central Universities. This project is also supported by the Shanghai Natural Science Foundation with financial support; contract grant number is 12ZR140707900.

语种：英文

外文关键词：poly(p-phenylene benzobisoxazole) (PBO); etched multiwalled carbon nanotube; electromagnetic properties

摘要：Etched multiwalled carbon nanotube (EMCNT) was prepared via an in situ reaction between Si and MCNT induced by the reaction between Na and I-2. Subsequently, EMCNTs was subjected to a copolymerization reaction with 4,6-diaminoresorcinol salt (DAR center dot 2HCl) and terephthalic acid (TA) in polyphosphoric acid (PPA) by Friedel-Crafts acylation reaction without any acid treatment or modification. The structure and morphology of the as-prepared poly (p-phenylene benzobisoxazole) (PBO)/EMCNT nanocomposites were characterized by x-ray diffraction (XRD), Raman spectra, and transmission electron microscopy (TEM). The scanning electronic microscope (SEM) images indicated that the EMCNTs can disperse in PBO matrix uniformly without agglomeration. And the electromagnetic properties of the obtained PBO/EMCNT nanocomposites characterized by vector network analyzer (VNA) showed that the introduced PBO/EMCNT composites exhibited a greater enhancement in dielectric loss and magnetic loss than PBO.